diff --git a/src/screens/blocking/BlockLists.module.css b/src/screens/blocking/BlockLists.module.css
index e334a48..06da5ee 100644
--- a/src/screens/blocking/BlockLists.module.css
+++ b/src/screens/blocking/BlockLists.module.css
@@ -63,7 +63,9 @@ row's name goes in `aria-label` instead, as the table checkboxes of Zones do.
 It takes BOTH classes `Check` gives its own DOM: `check` on the label (the 26 px
 target and the input's alignment) and `toggle` for the switch drawing.
 */
-.switch { composes: check from '../../ui/Check.module.css'; }
+/* Top-aligned with the list's first line (the cell is `align-top`), so the switch
+   keeps one place however tall the row grows. */
+.switch { composes: check from '../../ui/Check.module.css'; padding: 0; min-height: 0; }
 
 .name { font-weight: 600; }
 /* The URL wraps after its separators (`ui/UrlText`), not at whatever letter meets the
diff --git a/src/screens/blocking/BlockLists.tsx b/src/screens/blocking/BlockLists.tsx
index e6c2587..b1bbcef 100644
--- a/src/screens/blocking/BlockLists.tsx
+++ b/src/screens/blocking/BlockLists.tsx
@@ -761,7 +761,7 @@ export function BlockLists({
                     td: (item) =>
                       item.kind === 'heading'
                         ? { colSpan: 4, scope: 'colgroup', role: 'columnheader' }
-                        : undefined,
+                        : { className: 'align-top!' },
                     cell: (item) => {
                       if (item.kind === 'heading') return item.node
                       const { l, i } = item